Ruling-pen.



F. R. GOOD.

RUUNG 'PEN.

Af'PLlcArmN FILED MAR.15. 1916.

Patented Jan. 6,'11917.

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YtEANeIs n. GOOD, OF PHILADELPHIA, PENNSYLVANIA, AssIGNOE or ONE-HALE` To JOHN E. vOLLivIEE, OE LONG BEACH, CALIFORNIA.

RULING-PEN.

Specification of Letters Patent.

Patented dan. 16, 1917..

Application led March 15, 1916. Serial No. 842,334.

To all whom t may concern:

Be it known that I, FRANCIS RAYMOND GOOD. a citizen of the United States, residing at Philadelphia, in the county of Philadelphia, State of Pennsylvania, have invented new and useful Improvements in Ruling- Pens, of which the following is a specification.

This invention relates to a ruling pen, and pertains especally to a ruling pen such as is used by draftsmen.

It is an object of this invention to provide a ruling pen with means for adjusting the nibs and by which delicate and sensitive ad justments may be made.

1t is another object of this invention to provide means for adjusting the nibs adapted to be used with indicia on the handle of the pen to indicate the distance between the nibs.

lt is a further object of my invention to provide a ruling pen with means mounted on the shank of the handle whereby the distance between the pen nibs may be adjusted.

My invention further consists of features of design and assemblage of the parts of a ruling pen, whereby simplicity of structure and ease of adjustment are secured.

l have illustrated an embodiment of my invention in the accompanying drawing, in which:

Figure 1 is an elevation of my improved pen. Fig. 2 is a vertical section thereof with the nibs broken away. Fig. 3 is an enlarged sectionas seen on theeline 3-3 of Fig. 2. Figft is an enlarged fragmentary detail of the Slide and collar connection. Fig. 5 is an enlarged side view of a detail showing the connection between the shank and nibs. Fig. 6 is a vertical section as seen on the line 6-6 of Fig. 5.

More particularly, the pen comprises a handle 7 which is preferably of metal, and is provided with a threaded shank 8 of reduced diameter. The shank 8 is bifurcated at its lower end and has arms 9 and 10 to which are attached resilient nibs 11 and 12. The arms 9 and 10 are similar in their structure and the description of one, 9, will be sucient.

The arm 9 is rectangular in horizontal cross section, and is reduced in section adjacent its end by cutting away a portion thereof to provide a shoulder 13 and a face 14 off-set from the face 15. 4' lhe lower portion is reduced at the sides thereof to form a tongue 16. A lug 17 is provided on the face 11 and projects outwardly with its surface preferably flush with the surface 15.

The nib 11 is slotted, as indicated at 18 to receive the tongue 16. The slot extends to a point adjacent the upper wall of the lug 17. The upper portion of the nib 1l is off-set at 19 so that it will coperate with the face 14 to form a mortised joint with the lug 17 extending through the slot 1S. and the tongue 16 disposed therein. The nib 11 is secured to the arm 9 by means of a set screw 20 which extends through an aperture in the upper end of nib 11, and engages a threaded bore in the arm 9. As before stated nib 12 is similarly connected to arm 10. Nibs 11 and 12 are of a form well known in line pens.

Mounted upon the threaded shank 8 is a collar 21 of tubular form arranged to telescope with the handle 7, and provided adjacent its center with an inwardly extending portion 22 which is threaded to engage the threads on shank 8. The collar is also enlarged exteriorly at this point and knurled to form a convenient linger grip. as indicated at 23. The lower end of collar 21 is provided with an outstanding flange 24 which forms a portion of a thrust bearing for a slide 25.

Slide 25 is counterbored at its upper por- 4 tion and provided with a thread 26. The counterbore forms a groove of suflicient diameter to receive the flange 24 and permit the collar to rotate freely with respect to the slide. A threaded thrust ring 27 engages the threads 26 and secures a flange 241 to the slide 25. By the construction just described the collar 21 may be rotated, thereby moving it up or down the shank without rotating the slide 25.

An aperture 28 extends through the slide 25 and in opposite walls of the aperture are recesses 29 and 30 within which are disposed rollers 31 and 32 respectively, thereby providing anti-friction means for movement of the nibs 11 and 12 over the walls and aperture 28.

It is obvious that bv screwing the collar 21 up or down upon the shank the nibs 11 and 12 will be moved to or from each other. .As the collar moves downwardly, slide 25 crowds the ends of the nibs 1l and 12 tolOY Ward each other. As the collar moves up- Ward the resiliency of the nibs cause them to moye away from each other, thereby changing the adjustment between the points of the nibs and the breadth of the line. In order that an accurate adjustment may be made so that the same Width of line may be secured each time, I have provided the handle 7 with indicia as indicated at 38,'to indicate the position of the collar With respect to the handle or shank 8. To get a iner adjustment I have shown upon the collar 2l lines 34 which can be registered with a mark 35 upon the handle 7 thereby giving amicrometer adjustment.

What I claim is:

l. In Va pen, a shank provided with threads, adjustable nibs mounted thereon having ends inclined away from each other, a slide engaging the threads on said shank having nib adjusting means swiveled thereon, said means engaged with the inclined ends of said nibs.

2. In a pen, a shank provided with threads, resilient nibs having ends inclined FRANCIS R. GOOD.

Gopies of this patent may be obtained for ve cents each. by addressing the Commissioner of Patents.

Y Washington, D. C. 

